/*
 * MIT License
 *
 * Copyright (c) 2020 wen.gu <454727014@qq.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

/***************************************************************************
 * Name: uds_server.h
 *
 * Purpose: define server API 
 *
 * Developer:
 *   wen.gu , 2023-07-03
 *
 * TODO:
 *
 ***************************************************************************/
#ifndef __UDSSIPC_UDS_SERVER_H__
#define __UDSSIPC_UDS_SERVER_H__

#include <string>
#include <functional>
#include <map>
#include <mutex>
#include <vector>

#include "core/udssipc_type.h"
#include "core/com_message.h"
#include "core/thread.h"
#include "uds/uds_type.h"
#include "uds/general_uds_io.h"

class UdsServer final {
public:
    using on_connect_status_handler = std::function<void(ComFd uds_fd, bool is_connected)>;
    using ComIoMap = std::map<ComFd, ComIo::ComIoPtr>;
public:
    UdsServer();
    ~UdsServer();
public:
    /** url mean 'server name' */
    ComErrC bind(std::string_view url, on_connect_status_handler handler);
    ComErrC unbind();

public:
    ComMessagePtr read(int32_t timeout_ms = Timeout::WaitForever);
    ComErrC write(ComMessagePtr msg); //send to one client

    ComErrC write(const std::vector<ComFd>& clients, ComMessagePtr msg); //send to many clients

protected:
    void listen(); /** Listen for connections from 'clients' */

protected:
    void addClient(ComFd client_id);
    void delClient(ComFd client_id);
    void delClients();
    ComIo::ComIoPtr getComIo(ComFd client_id);
private:
    bool is_running_ = true;
    Thread* listen_worker_ = nullptr;
    ComFd server_fd_ = INVALID_COM_FD;    
    MessageQueue::MessageQueuePtr recv_queue_ = nullptr;
    on_connect_status_handler status_handler_ = nullptr;
    ComIoMap io_map_;
    std::string server_url_;
    std::mutex lock_;
    std::vector<ComFd> deleted_clients_;
    

};

#endif /** !__UDSSIPC_UDS_SERVER_H__ */